EP1249673A3 - Thermal expansion valve - Google Patents

Thermal expansion valve Download PDF

Info

Publication number
EP1249673A3
EP1249673A3 EP02007848A EP02007848A EP1249673A3 EP 1249673 A3 EP1249673 A3 EP 1249673A3 EP 02007848 A EP02007848 A EP 02007848A EP 02007848 A EP02007848 A EP 02007848A EP 1249673 A3 EP1249673 A3 EP 1249673A3
Authority
EP
European Patent Office
Prior art keywords
valve
passage
thermal expansion
working rod
expansion valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02007848A
Other languages
German (de)
French (fr)
Other versions
EP1249673B1 (en
EP1249673A2 (en
Inventor
Kazuto Kobayashi
Kazuhiko Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikoki Corp
Original Assignee
Fujikoki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujikoki Corp filed Critical Fujikoki Corp
Publication of EP1249673A2 publication Critical patent/EP1249673A2/en
Publication of EP1249673A3 publication Critical patent/EP1249673A3/en
Application granted granted Critical
Publication of EP1249673B1 publication Critical patent/EP1249673B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
    • F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F16K1/422—Valve seats attachable by a threaded connection to the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0236—Diaphragm cut-off apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/068—Expansion valves combined with a sensor
    • F25B2341/0683—Expansion valves combined with a sensor the sensor is disposed in the suction line and influenced by the temperature or the pressure of the suction gas

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Temperature-Responsive Valves (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

A thermal expansion valve 100 comprises a square column shaped valve body 110, and the valve body 110 contains a first passage 120 with a bottom to which the refrigerant is introduced, a valve chamber 122 formed near the bottom of the passage, a second refrigerant passage 126 traveling toward the evaporator, and a third refrigerant passage 128 returning from the evaporator. A valve means 130 equipped within the valve chamber is fixed to the working rod 132 and operated by a power element 160. The working rod 132 comprises a small-diameter portion 135, and the valve means 130 is fixed by a welding process W1 thereto with a valve seat 200 equipped in advance. The valve seat member 200 is press fit using the working rod 132 to a hole 116 formed to the valve body.
EP02007848A 2001-04-13 2002-04-08 Thermal expansion valve Expired - Lifetime EP1249673B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001115785 2001-04-13
JP2001115785A JP3815978B2 (en) 2001-04-13 2001-04-13 Thermal expansion valve

Publications (3)

Publication Number Publication Date
EP1249673A2 EP1249673A2 (en) 2002-10-16
EP1249673A3 true EP1249673A3 (en) 2004-01-07
EP1249673B1 EP1249673B1 (en) 2007-06-06

Family

ID=18966629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007848A Expired - Lifetime EP1249673B1 (en) 2001-04-13 2002-04-08 Thermal expansion valve

Country Status (6)

Country Link
US (1) US6560982B2 (en)
EP (1) EP1249673B1 (en)
JP (1) JP3815978B2 (en)
KR (1) KR100856119B1 (en)
CN (1) CN1237316C (en)
DE (1) DE60220472T2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4041334B2 (en) * 2002-04-08 2008-01-30 株式会社不二工機 Expansion valve and refrigeration cycle
US6848624B2 (en) * 2002-10-18 2005-02-01 Parker-Hannifin Corporation Refrigeration expansion valve with thermal mass power element
JP2005164208A (en) * 2003-12-05 2005-06-23 Fuji Koki Corp Expansion valve
DE602005001293T2 (en) 2004-05-17 2008-02-07 Fujikoki Corp. expansion valve
DE102005050086A1 (en) * 2004-11-08 2006-05-11 Otto Egelhof Gmbh & Co. Kg Expansion valve for vehicle air-conditioning system, has spherical seat cross-sectional area formed between valve closure unit and seat and designed smaller than annular gap which is formed between release stud and passage opening
JP4706372B2 (en) * 2005-07-28 2011-06-22 株式会社デンソー Thermal expansion valve
JP2008076031A (en) * 2006-09-25 2008-04-03 Denso Corp Expansion valve
US8267329B2 (en) * 2007-01-26 2012-09-18 Fujikoki Corporation Expansion valve with noise reduction means
CN102466377B (en) * 2010-11-18 2014-10-29 浙江三花股份有限公司 Expansion valve
JP2012229885A (en) * 2011-04-27 2012-11-22 Saginomiya Seisakusho Inc Temperature expansion valve
JP5550601B2 (en) * 2011-04-27 2014-07-16 株式会社鷺宮製作所 Temperature expansion valve
CN102661640B (en) * 2012-05-08 2014-03-12 雷宜东 Three-way thermostatic expansion valve
CZ309646B6 (en) * 2015-01-09 2023-06-14 Hanon Systems Thermostatic expansion valve for air conditioning systems
CN105698455B (en) * 2016-03-14 2024-04-05 宁波松鹰汽车部件有限公司 Expansion valve opening control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961038A (en) * 1995-07-13 1999-10-05 Pacific Industrial Co., Ltd. Thermal type expansion valve
JPH11325308A (en) * 1998-05-15 1999-11-26 Saginomiya Seisakusho Inc Temperature expansion valve
EP1052464A2 (en) * 1999-05-11 2000-11-15 Fujikoki Corporation Thermal expansion valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3209868B2 (en) * 1994-11-17 2001-09-17 株式会社不二工機 Expansion valve
JP3502710B2 (en) * 1995-11-22 2004-03-02 株式会社不二工機 Expansion valve
JP3794100B2 (en) * 1996-07-01 2006-07-05 株式会社デンソー Expansion valve with integrated solenoid valve
JP3116995B2 (en) * 1996-09-02 2000-12-11 株式会社デンソー Thermal expansion valve
JP3372439B2 (en) * 1996-10-11 2003-02-04 株式会社不二工機 Expansion valve
JPH10253199A (en) * 1997-03-11 1998-09-25 Fuji Koki Corp Thermal expansion valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961038A (en) * 1995-07-13 1999-10-05 Pacific Industrial Co., Ltd. Thermal type expansion valve
JPH11325308A (en) * 1998-05-15 1999-11-26 Saginomiya Seisakusho Inc Temperature expansion valve
EP1052464A2 (en) * 1999-05-11 2000-11-15 Fujikoki Corporation Thermal expansion valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29) *

Also Published As

Publication number Publication date
US6560982B2 (en) 2003-05-13
EP1249673B1 (en) 2007-06-06
JP2002310538A (en) 2002-10-23
US20020162896A1 (en) 2002-11-07
CN1237316C (en) 2006-01-18
KR100856119B1 (en) 2008-09-03
JP3815978B2 (en) 2006-08-30
EP1249673A2 (en) 2002-10-16
DE60220472T2 (en) 2008-01-31
CN1381702A (en) 2002-11-27
DE60220472D1 (en) 2007-07-19
KR20020079608A (en) 2002-10-19

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